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planetary nebula    我要挑错精准翻译

参考词典中planetary nebula的常规释义:

基本释义
  • 行星状星云
英英解释
  •  1个名词解释

    1. a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
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